"Silk" said ...Don't worry about using ME characters, there are never enough ME images. I almost only use Miranda Lawson for my images. The image is decent. Liara's left hand is slightly off and the fingers on her right hand could probably be a bit better, but the lighting is done well. Seeing Liara's sad face, gives you a sad feeling as well. If that is what you aimed for than great work on that.
And I apologise in advanced if I post a few too many Mass Effect characters, just finished the games again and well...